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11. 1". BUNDOGKXE E. T. MAPBL.

A .Y REPRIGERATOR. -No. 244,542.

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UNITED ESTATES.

PATENT OFFICE. 'i

HENRY F. BUN DOCK AND ELICA T. MAPEL, OF SACRAMENTO, CALIFORNIA; SAID MAPEL ASSI-GrNOR TO SAID BUNDOCK.

REFRIGERATOR.`

SPECIFICATION forming part of Letters Patent No. 244,542, dated July 19, 1881.

Application filed August 11, 1879.

To all whom it may concern:

Be it known that we, HENRY F. BUNDOCK and ELIGA T. MAPEL, both of the city of Sacramento, State of California, have invented a new and useful Improvement in Refrigerators, of which the following is a specification.

The invention relates to that class of refrigerators used to keep articles cool by means of the cooling effect of contact with and the evaporation of water. .1.

The drawing represents a sectional elevation of a vessel' consisting of a concave cover and a lower plate embodying our invention.

vIn the drawing is represented a plate, B, composed of two shells-that is, the upper shell, t', and the lower shell, o--each shell being united by an outer. rim, so that they form a water-tight vessel in the form of a plate, the water being pouredin through apertures in the annular trough f, the object of said trough being to admit water to the surface, so as to prevent insects from gaining access to the interior of thevessel. The water is to be poured through the apertures in f until it fills the recess to. The top part is constructed in a similar manner, but of another form, being com-` posed of an inner shell, t', and an outer shell,

o, with a water-tight recess between the shells.

The top of the inner shell, i, is provided with a perforated air-chimney, a, andthe top of the outer shell, o, is open and provided with a cap, c. When the cap c is removed water can be 'poured into the recess w through the opening at the top of o. Thus it will be seen that when the recess w of both the top and bottom pieces is filled with water the water will completely surround any article that is placed within the inner shell, t', or inside of the vessel formed by the shells.

These refrigerators are preferably made of that class of material known as porous clay,77 which is earthenware not glazed, so -that water placed in the recess w will continuously evaporate through the shells, and by such evaporation carry oft' the heat and keep the articles placed within these refrigerators cool;

Y and in case no t evaporation occurs the refrigerators are kept cool within by the temperature of the water.

The inner wall, i, ofthe top T extends to or V5o beyond the top of the outer wall, o, and is provided with air-holes a, as before mentioned. This extension of the wall t' allows the waterspacew to be filled without danger of iioodin g the interior of `the refrigerator. Above these 5 5 air-holes a, and resting ou the outer wall, o, which is cut out to receive it, is the removable cap c. This cap is so shaped as to aord considerable space for the reception of air or odor arising from the interior of the refrigerator, 6c

and may he removed to allow the escape of such air and the filling of the space w, and can be quickly replaced in order to prevent the escape ot' cold air from the interior.

The top T rests upon the fiat upper wall of Ythe hase B, inside the circle of the trough f. This leaves the trough free to be lled `or emptied without making any difference to the joint between the top and base, -as said joint is not 'dependent on the Water for sealing. We 7o consider these ,features peculiar to our construction.

What we claim is- The herein-described refrigerator, consisting of the base B, having double wallsz o and water-space w, and provided in its upper wall, t', with the annulartrough f communicating with the water-space, the top T, havinglike double walls, fio, and space w, fitting squarely upon the upper wall of the base within the circle of the 8o trough f, said top having its inner wall extended upward to or beyond the top of the outer wall, and provided with air-passages c, and having its outer wall cut out to receive the removable capl c, which affords air-space above the-passages a, all constructed and arranged as set forth. v

HENRY F. BUNDOCK.

ELICA T. MAPEL.

Witnesses:

ELIsoN V. BUoIrLEY, JOHN WILSON. 

